gayle_pcmcia.c revision 1.19
1 /* $NetBSD: gayle_pcmcia.c,v 1.19 2006/03/05 22:01:32 aymeric Exp $ */ 2 3 /* public domain */ 4 5 #include <sys/cdefs.h> 6 __KERNEL_RCSID(0, "$NetBSD: gayle_pcmcia.c,v 1.19 2006/03/05 22:01:32 aymeric Exp $"); 7 8 /* PCMCIA front-end driver for A1200's and A600's. */ 9 10 #include <sys/param.h> 11 #include <sys/device.h> 12 #include <sys/kernel.h> 13 #include <sys/kthread.h> 14 #include <sys/systm.h> 15 16 #include <uvm/uvm.h> 17 18 #include <dev/pcmcia/pcmciareg.h> 19 #include <dev/pcmcia/pcmciavar.h> 20 21 #include <machine/cpu.h> 22 #include <amiga/amiga/custom.h> 23 #include <amiga/amiga/device.h> 24 #include <amiga/amiga/gayle.h> 25 #include <amiga/amiga/isr.h> 26 27 28 /* There is one of these for each slot. And yes, there is only one slot. */ 29 struct pccard_slot { 30 struct pccard_softc *sc; /* refer to `parent' */ 31 int (*intr_func)(void *); 32 void * intr_arg; 33 struct device *card; 34 int flags; 35 #define SLOT_OCCUPIED 0x01 36 #define SLOT_NEW_CARD_EVENT 0x02 37 }; 38 39 struct pccard_softc { 40 struct device sc_dev; 41 struct bus_space_tag io_space; 42 struct bus_space_tag attr_space; 43 struct bus_space_tag mem_space; 44 struct pccard_slot devs[1]; 45 struct isr intr6; 46 struct isr intr2; 47 }; 48 49 static int pccard_probe(struct device *, struct cfdata *, void *); 50 static void pccard_attach(struct device *, struct device *, void *); 51 static void pccard_attach_slot(struct pccard_slot *); 52 static int pccard_intr6(void *); 53 static int pccard_intr2(void *); 54 static void pccard_create_kthread(void *); 55 static void pccard_kthread(void *); 56 57 static int pcf_mem_alloc(pcmcia_chipset_handle_t, bus_size_t, 58 struct pcmcia_mem_handle *); 59 static void pcf_mem_free(pcmcia_chipset_handle_t, struct pcmcia_mem_handle *); 60 static int pcf_mem_map(pcmcia_chipset_handle_t, int, bus_addr_t, bus_size_t, 61 struct pcmcia_mem_handle *, bus_addr_t *, int *); 62 static void pcf_mem_unmap(pcmcia_chipset_handle_t, int); 63 static int pcf_io_alloc(pcmcia_chipset_handle_t, bus_addr_t, bus_size_t, 64 bus_size_t, struct pcmcia_io_handle *); 65 static void pcf_io_free(pcmcia_chipset_handle_t, struct pcmcia_io_handle *); 66 static int pcf_io_map(pcmcia_chipset_handle_t, int, bus_addr_t, bus_size_t, 67 struct pcmcia_io_handle *, int *); 68 static void pcf_io_unmap(pcmcia_chipset_handle_t, int); 69 static void *pcf_intr_establish(pcmcia_chipset_handle_t, 70 struct pcmcia_function *, int, int (*)(void *), void *); 71 static void pcf_intr_disestablish(pcmcia_chipset_handle_t, void *); 72 static void pcf_socket_enable(pcmcia_chipset_handle_t); 73 static void pcf_socket_disable(pcmcia_chipset_handle_t); 74 static void pcf_socket_settype(pcmcia_chipset_handle_t, int); 75 76 static bsr(pcmio_bsr1, u_int8_t); 77 static bsw(pcmio_bsw1, u_int8_t); 78 static bsrm(pcmio_bsrm1, u_int8_t); 79 static bswm(pcmio_bswm1, u_int8_t); 80 static bsrm(pcmio_bsrr1, u_int8_t); 81 static bswm(pcmio_bswr1, u_int8_t); 82 static bssr(pcmio_bssr1, u_int8_t); 83 static bscr(pcmio_bscr1, u_int8_t); 84 85 CFATTACH_DECL(pccard, sizeof(struct pccard_softc), 86 pccard_probe, pccard_attach, NULL, NULL); 87 88 static struct pcmcia_chip_functions chip_functions = { 89 pcf_mem_alloc, pcf_mem_free, 90 pcf_mem_map, pcf_mem_unmap, 91 pcf_io_alloc, pcf_io_free, 92 pcf_io_map, pcf_io_unmap, 93 pcf_intr_establish, pcf_intr_disestablish, 94 pcf_socket_enable, pcf_socket_disable, 95 pcf_socket_settype 96 }; 97 98 static struct amiga_bus_space_methods pcmio_bs_methods; 99 100 static u_int8_t *reset_card_reg; 101 102 static int 103 pccard_probe(struct device *dev, struct cfdata *cfd, void *aux) 104 { 105 106 return (/*is_a600() || */is_a1200()) && matchname(aux, "pccard"); 107 } 108 109 static void 110 pccard_attach(struct device *parent, struct device *myself, void *aux) 111 { 112 struct pccard_softc *self = (struct pccard_softc *) myself; 113 struct pcmciabus_attach_args paa; 114 vaddr_t pcmcia_base; 115 vaddr_t i; 116 int ret; 117 118 printf("\n"); 119 120 gayle_init(); 121 122 ret = uvm_map(kernel_map, &pcmcia_base, 123 GAYLE_PCMCIA_END - GAYLE_PCMCIA_START, NULL, 124 UVM_UNKNOWN_OFFSET, 0, 125 UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, 126 UVM_INH_NONE, UVM_ADV_RANDOM, 0)); 127 if (ret != 0) { 128 printf("attach failed (no virtual memory)\n"); 129 return; 130 } 131 132 for (i = GAYLE_PCMCIA_START; i < GAYLE_PCMCIA_END; i += PAGE_SIZE) 133 pmap_enter(kernel_map->pmap, 134 i - GAYLE_PCMCIA_START + pcmcia_base, i, 135 VM_PROT_READ | VM_PROT_WRITE, TRUE); 136 pmap_update(kernel_map->pmap); 137 138 /* override the one-byte access methods for I/O space */ 139 pcmio_bs_methods = amiga_bus_stride_1; 140 pcmio_bs_methods.bsr1 = pcmio_bsr1; 141 pcmio_bs_methods.bsw1 = pcmio_bsw1; 142 pcmio_bs_methods.bsrm1 = pcmio_bsrm1; 143 pcmio_bs_methods.bswm1 = pcmio_bswm1; 144 pcmio_bs_methods.bsrr1 = pcmio_bsrr1; 145 pcmio_bs_methods.bswr1 = pcmio_bswr1; 146 pcmio_bs_methods.bssr1 = pcmio_bssr1; 147 pcmio_bs_methods.bscr1 = pcmio_bscr1; 148 149 reset_card_reg = (u_int8_t *) pcmcia_base + 150 (GAYLE_PCMCIA_RESET - GAYLE_PCMCIA_START); 151 152 self->io_space.base = (bus_addr_t) pcmcia_base + 153 (GAYLE_PCMCIA_IO_START - GAYLE_PCMCIA_START); 154 self->io_space.absm = &pcmio_bs_methods; 155 156 self->attr_space.base = (bus_addr_t) pcmcia_base + 157 (GAYLE_PCMCIA_ATTR_START - GAYLE_PCMCIA_START); 158 self->attr_space.absm = &amiga_bus_stride_1; 159 160 /* XXX we should check if the 4M of common memory are actually 161 * RAM or PCMCIA usable. 162 * For now, we just do as if the 4M were RAM and make common memory 163 * point to attribute memory, which is OK for some I/O cards. 164 */ 165 self->mem_space.base = (bus_addr_t) pcmcia_base; 166 self->mem_space.absm = &amiga_bus_stride_1; 167 168 self->devs[0].sc = self; 169 self->devs[0].intr_func = NULL; 170 self->devs[0].intr_arg = NULL; 171 self->devs[0].flags = 0; 172 173 gayle.pcc_status = 0; 174 gayle.intreq = 0; 175 gayle.pcc_config = 0; 176 gayle.intena &= GAYLE_INT_IDE; 177 178 paa.paa_busname = "pcmcia"; 179 paa.pct = &chip_functions; 180 paa.pch = &self->devs[0]; 181 paa.iobase = 0; 182 paa.iosize = 0; 183 self->devs[0].card = 184 config_found(myself, &paa, simple_devprint); 185 if (self->devs[0].card == NULL) { 186 printf("attach failed, config_found() returned NULL\n"); 187 pmap_remove(kernel_map->pmap, pcmcia_base, 188 pcmcia_base + (GAYLE_PCMCIA_END - GAYLE_PCMCIA_START)); 189 pmap_update(kernel_map->pmap); 190 uvm_deallocate(kernel_map, pcmcia_base, 191 GAYLE_PCMCIA_END - GAYLE_PCMCIA_START); 192 return; 193 } 194 195 self->intr6.isr_intr = pccard_intr6; 196 self->intr6.isr_arg = self; 197 self->intr6.isr_ipl = 6; 198 add_isr(&self->intr6); 199 200 self->intr2.isr_intr = pccard_intr2; 201 self->intr2.isr_arg = self; 202 self->intr2.isr_ipl = 2; 203 add_isr(&self->intr2); 204 205 kthread_create(pccard_create_kthread, self); 206 207 gayle.intena |= GAYLE_INT_DETECT | GAYLE_INT_IREQ; 208 209 /* reset the card if it's already there */ 210 if (gayle.pcc_status & GAYLE_CCMEM_DETECT) { 211 volatile u_int8_t x; 212 *reset_card_reg = 0x0; 213 delay(1000); 214 x = *reset_card_reg; 215 gayle.pcc_status = GAYLE_CCMEM_WP | GAYLE_CCIO_SPKR; 216 } 217 218 pccard_attach_slot(&self->devs[0]); 219 } 220 221 /* This is called as soon as it is possible to create a kernel thread */ 222 static void 223 pccard_create_kthread(void *arg) 224 { 225 struct pccard_softc *self = arg; 226 227 if (kthread_create1(pccard_kthread, self, NULL, "pccard thread")) { 228 printf("%s: can't create kernel thread\n", 229 self->sc_dev.dv_xname); 230 panic("pccard kthread_create() failed"); 231 } 232 } 233 234 static int 235 pccard_intr6(void *arg) 236 { 237 struct pccard_softc *self = arg; 238 239 if (gayle.intreq & GAYLE_INT_DETECT) { 240 gayle.intreq = GAYLE_INT_IDE | GAYLE_INT_STSCHG | 241 GAYLE_INT_SPKR | GAYLE_INT_WP | GAYLE_INT_IREQ; 242 self->devs[0].flags |= SLOT_NEW_CARD_EVENT; 243 return 1; 244 } 245 return 0; 246 } 247 248 static int 249 pccard_intr2(void *arg) 250 { 251 struct pccard_softc *self = arg; 252 struct pccard_slot *slot = &self->devs[0]; 253 254 if (slot->flags & SLOT_NEW_CARD_EVENT) { 255 slot->flags &= ~SLOT_NEW_CARD_EVENT; 256 257 /* reset the registers */ 258 gayle.intreq = GAYLE_INT_IDE | GAYLE_INT_DETECT; 259 gayle.pcc_status = GAYLE_CCMEM_WP | GAYLE_CCIO_SPKR; 260 gayle.pcc_config = 0; 261 pccard_attach_slot(&self->devs[0]); 262 } else { 263 int intreq = gayle.intreq & 264 (GAYLE_INT_STSCHG | GAYLE_INT_WP | GAYLE_INT_IREQ); 265 if (intreq) { 266 gayle.intreq = (intreq ^ 0x2c) | 0xc0; 267 268 return slot->flags & SLOT_OCCUPIED && 269 slot->intr_func != NULL && 270 slot->intr_func(slot->intr_arg); 271 } 272 } 273 return 0; 274 } 275 276 static void 277 pccard_kthread(void *arg) 278 { 279 struct pccard_softc *self = arg; 280 struct pccard_slot *slot = &self->devs[0]; 281 282 for (;;) { 283 int s = spl2(); 284 285 if (slot->flags & SLOT_NEW_CARD_EVENT) { 286 slot->flags &= ~SLOT_NEW_CARD_EVENT; 287 gayle.intreq = 0xc0; 288 289 /* reset the registers */ 290 gayle.intreq = GAYLE_INT_IDE | GAYLE_INT_DETECT; 291 gayle.pcc_status = GAYLE_CCMEM_WP | GAYLE_CCIO_SPKR; 292 gayle.pcc_config = 0; 293 pccard_attach_slot(&self->devs[0]); 294 } 295 splx(s); 296 297 tsleep(slot, PWAIT, "pccthread", hz); 298 } 299 } 300 301 static void 302 pccard_attach_slot(struct pccard_slot *slot) 303 { 304 305 if (!(slot->flags & SLOT_OCCUPIED) && 306 gayle.pcc_status & GAYLE_CCMEM_DETECT) { 307 if (pcmcia_card_attach(slot->card) == 0) 308 slot->flags |= SLOT_OCCUPIED; 309 } 310 } 311 312 static int 313 pcf_mem_alloc(pcmcia_chipset_handle_t pch, bus_size_t bsz, 314 struct pcmcia_mem_handle *pcmh) 315 { 316 struct pccard_slot *slot = (struct pccard_slot *) pch; 317 318 pcmh->memt = &slot->sc->attr_space; 319 pcmh->memh = pcmh->memt->base; 320 return 0; 321 } 322 323 static void 324 pcf_mem_free(pcmcia_chipset_handle_t pch, struct pcmcia_mem_handle *memh) 325 { 326 } 327 328 static int 329 pcf_mem_map(pcmcia_chipset_handle_t pch, int kind, bus_addr_t addr, 330 bus_size_t size, struct pcmcia_mem_handle *pcmh, 331 bus_addr_t *offsetp, int *windowp) 332 { 333 struct pccard_slot *slot = (struct pccard_slot *) pch; 334 335 /* Ignore width requirements */ 336 kind &= ~PCMCIA_WIDTH_MEM_MASK; 337 338 switch (kind) { 339 case PCMCIA_MEM_ATTR: 340 pcmh->memt = &slot->sc->attr_space; 341 break; 342 case PCMCIA_MEM_COMMON: 343 pcmh->memt = &slot->sc->mem_space; 344 break; 345 default: 346 /* This means that this code needs an update/a bugfix */ 347 printf(__FILE__ ": unknown kind %d of PCMCIA memory\n", kind); 348 return 1; 349 } 350 351 bus_space_map(pcmh->memt, addr, size, 0, &pcmh->memh); 352 *offsetp = 0; 353 *windowp = 0; /* unused */ 354 355 return 0; 356 } 357 358 static void 359 pcf_mem_unmap(pcmcia_chipset_handle_t pch, int win) 360 { 361 } 362 363 static int 364 pcf_io_alloc(pcmcia_chipset_handle_t pch, bus_addr_t start, bus_size_t size, 365 bus_size_t align, struct pcmcia_io_handle *pcihp) 366 { 367 struct pccard_slot *slot = (struct pccard_slot *) pch; 368 369 pcihp->iot = &slot->sc->io_space; 370 pcihp->ioh = pcihp->iot->base; 371 return 0; 372 } 373 374 static void 375 pcf_io_free(pcmcia_chipset_handle_t pch, struct pcmcia_io_handle *pcihp) 376 { 377 } 378 379 static int 380 pcf_io_map(pcmcia_chipset_handle_t pch, int width, bus_addr_t offset, 381 bus_size_t size, struct pcmcia_io_handle *pcihp, int *windowp) 382 { 383 struct pccard_slot *slot = (struct pccard_slot *) pch; 384 385 pcihp->iot = &slot->sc->io_space; 386 bus_space_map(pcihp->iot, offset, size, 0, &pcihp->ioh); 387 388 *windowp = 0; /* unused */ 389 return 0; 390 } 391 392 static void 393 pcf_io_unmap(pcmcia_chipset_handle_t pch, int win) 394 { 395 } 396 397 static void * 398 pcf_intr_establish(pcmcia_chipset_handle_t pch, struct pcmcia_function *pf, 399 int ipl, int (*func)(void *), void *arg) 400 { 401 struct pccard_slot *slot = (struct pccard_slot *) pch; 402 int s; 403 404 s = splhigh(); 405 if (slot->intr_func == NULL) { 406 slot->intr_func = func; 407 slot->intr_arg = arg; 408 } else { 409 /* if we are here, we need to put intrs into a list */ 410 printf("ARGH! see " __FILE__ "\n"); 411 slot = NULL; 412 } 413 splx(s); 414 415 return slot; 416 } 417 418 static void 419 pcf_intr_disestablish(pcmcia_chipset_handle_t pch, void *intr_handler) 420 { 421 struct pccard_slot *slot = (struct pccard_slot *) intr_handler; 422 423 if (slot != NULL) { 424 slot->intr_func = NULL; 425 slot->intr_arg = NULL; 426 } 427 } 428 429 static void 430 pcf_socket_enable(pcmcia_chipset_handle_t pch) 431 { 432 } 433 434 static void 435 pcf_socket_disable(pcmcia_chipset_handle_t pch) 436 { 437 } 438 439 static void 440 pcf_socket_settype(pcmcia_chipset_handle_t pch, int type) { 441 } 442 443 static u_int8_t 444 pcmio_bsr1(bus_space_handle_t h, bus_size_t o) 445 { 446 447 return *((volatile u_int8_t *) h + o + (o & 1 ? 0xffff : 0)); 448 } 449 450 static void 451 pcmio_bsw1(bus_space_handle_t h, bus_size_t o, unsigned v) 452 { 453 454 *((volatile u_int8_t *) h + o + (o & 1 ? 0xffff : 0)) = v; 455 } 456 457 static void 458 pcmio_bsrm1(bus_space_handle_t h, bus_size_t o, u_int8_t *p, bus_size_t c) 459 { 460 volatile u_int8_t *src = (volatile u_int8_t *) 461 (h + o + (o & 1 ? 0xffff : 0)); 462 463 464 /* XXX we can (should, must) optimize this if c >= 4 */ 465 for (; c > 0; c--) 466 *p++ = *src; 467 } 468 469 470 static void 471 pcmio_bswm1(bus_space_handle_t h, bus_size_t o, const u_int8_t *p, bus_size_t c) 472 { 473 volatile u_int8_t *dst = (volatile u_int8_t *) 474 (h + o + (o & 1 ? 0xffff : 0)); 475 476 477 /* XXX we can (should, must) optimize this if c >= 4 */ 478 for (; c > 0; c--) 479 *dst = *p++; 480 } 481 482 static void 483 pcmio_bsrr1(bus_space_handle_t h, bus_size_t o, u_int8_t *p, bus_size_t c) 484 { 485 volatile u_int8_t *cp1; 486 volatile u_int8_t *cp2; 487 volatile u_int8_t *temp; 488 489 if (o & 1) { 490 cp1 = (volatile u_int8_t *) h + o + 0x10000; 491 cp2 = (volatile u_int8_t *) h + o; 492 } else { 493 cp1 = (volatile u_int8_t *) h + o; 494 cp2 = (volatile u_int8_t *) h + o + 0x10000 + 2; 495 } 496 497 /* XXX we can (should, must) optimize this if c >= 4 */ 498 for (; c > 0; c--) { 499 *p++ = *cp1; 500 cp1 += 2; 501 502 /* swap pointers - hope gcc generates exg for this ;) */ 503 temp = cp1; 504 cp1 = cp2; 505 cp2 = temp; 506 } 507 } 508 509 510 static void 511 pcmio_bswr1(bus_space_handle_t h, bus_size_t o, const u_int8_t *p, bus_size_t c) 512 { 513 volatile u_int8_t *cp1; 514 volatile u_int8_t *cp2; 515 volatile u_int8_t *temp; 516 517 if (o & 1) { 518 cp1 = (volatile u_int8_t *) h + o + 0x10000; 519 cp2 = (volatile u_int8_t *) h + o; 520 } else { 521 cp1 = (volatile u_int8_t *) h + o; 522 cp2 = (volatile u_int8_t *) h + o + 0x10000 + 2; 523 } 524 525 /* XXX we can (should, must) optimize this if c >= 4 */ 526 for (; c > 0; c--) { 527 *cp1 = *p++; 528 cp1 += 2; 529 530 /* swap pointers - hope gcc generates exg for this ;) */ 531 temp = cp1; 532 cp1 = cp2; 533 cp2 = temp; 534 } 535 } 536 537 void 538 pcmio_bssr1(bus_space_handle_t h, bus_size_t o, unsigned v, bus_size_t c) 539 { 540 541 panic("pcmio_bssr1 is not defined (" __FILE__ ")"); 542 } 543 544 void 545 pcmio_bscr1(bus_space_handle_t h, bus_size_t o, bus_space_handle_t g, 546 bus_size_t q, bus_size_t c) 547 { 548 549 panic("pcmio_bscr1 is not defined (" __FILE__ ")"); 550 } 551
Indexes created Tue Sep 30 20:09:53 GMT 2025